Weishi No 1000 timegrapher, logging data over time without USB

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I spent a lot of time trying to find a program that could let me log data from my timegrapher into a CSV file, but couldnt find any. It couldn't find any information about the USB interface on the time grapher either. But i still wanted to be able to do some long time logging of my watches.

To solve this i put a webcam in front of it, and let a Python program using OCR(openCV and Tesseract) read the values for rate, amplitude and beat error, and save to a CSV file. A 3d-printed arm holds…

Weishi No 1000 timegrapher, logging data over time without USB

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